Punching and shearing machine



(170 Model.)

J. M. SAILER.

PUNGHING AND SHEARING MACHINE.

No. 271,277. Patented Jan. 30,1883. 7

WITNESSES ATTORNEYS.

UNITED STATES PATENT @FFIQE.

JoH'NM. SAILER, or PORTLAND,

MICHIGAN.

PUNCHING AND SHEARING MACHINE.

SPECIFICATION forming part of Letters Patent No. 271,277, dated January 30, 1883,

(No model.)

To all whom it may concern:

Be it known that 1, JOHN M. SAILER, of Portland, in the county of Ionia and State of Michigan, have invented a new and Improved Punching and Shearing Machine, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved punching and shearing machine which is of simple construction and is very powerful and durable.

The invention consists in a punching and shearing machine constructed with one jaw pivoted in the machine-frame and the other jaw connected with this pivoted jaw by means of link-bars pivoted to the sides of both jaws. Thejaws are provided on the adjoining edges with guide-lugs resting sidewise against each other, for preventing lateral movement of the jaws. Thejaws can be operated by means of a right-and-left-hand screw by a camor other suitable device.-

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a longitudinal elevation of my improved punching and shearing machine, parts being shown in section. Fig. 2 isa-crosssectional elevation of the same on the line m w, Fig.1. Fig. 3 is a detail cross-sectional elevation of the guides and shears on the line y y, Fig. 1.

An upper jaw, A, and a lower jaw, B, are coupled by two link-bars, 0, one on each side of the jaws, which link-bars are made very strong and heavy, and are pivoted to the jaws. Each jaw is provided in its rear end with a loosely mounted or pivoted nut, A B, through which a vertical right-and-left-hand-threaded screw, D, passes, the lower end of this screw resting on the base E of the machine. That part of the screw passing through the upper jaw, A, is threaded in one direction and that partpassingthrough the lowerjaw,B, is threaded in the opposite direction. The lower jaw, 13, is pivoted by means of a pintle, F, between two standards, G, on the base E. The punchholder H is pivoted in the front part of the upper jaw, A, by a pintle, I, and has its upper and lower ends guided in two apertured transverse plates J, held to the standards G. The die-holder K is pivoted in the front part of the lowerjaw,-B, by means of the pintle F, as shown. Two lugs, L L, project from the upper edge of the lowerjaw, B, and two like or similar lugs, M, project from the lower edge of the upper jaw, A, the adjoining or inner surfaces of these lugs resting against each other, which lugs serve to guide thejaws in their movements and prevent lateral movement of the jaws on each other. The sheacblades N are attached to projections or lugs O, projecting from the edges of the jaws between the lugs L L and M M. In place of the right-and-left screw, a cam or any other suitable device may be used to operate the jaws.

The operation is as follows: If the rear ends of the jaws are separated, the lower jaw will be lowered and the link-bars U will draw the front end of the npperjaw downward slightly, the lowerjaw turning on the pintle F and the upper jaw turning on the upper pivots of the link-bars C. At the same time, the rear end of the upper jaw being raised, the front of this upperjaw is pressed downward, and the punch is forced through the material into thedie, the pivoted die-holder H moving longitudinally in its guides J. To cut with the shears, the rear ends of the jaws mustbe brought together,

the lower jaw swinging on its pintle F and the upper jaw swiuging'on the upper pintles of the link-barsO. 'lhe lowerjaw is raised and the upper jaw is raised by the link bars 0; but its rear part is lowered more rapidly by the screw or other device, so that this upper jaw will be raised at its front part and will be lowered or depressed at its rear part, so that the crossing'point of the sharp blades will move toward the front part of the machine on a curved line. In both operations most of the strain will be taken from the frame and will be mainly on the link-bars G and their pivots, which must be made very strong.

Having thus described myinvention, I claim as new and desire to secure by Letters Patent- 1. A punching and shearing machine constructed substantially as herein shown and described, with two jaws connected by pivoted link-bars, as set forth.

2. In a punching and shearing machine, the

combination, with ajaw pivoted in the machineframe, of a jaw connected with this pivoted jaw by link-bars pivoted to both jaws, substanrialiy as herein shown and described, and for 5 the purpose set forth. 9

3. In apunching and shearing machine, the combination, with a jaw pivoted in the machineframe, of a jaw connected with this pivoted jaw by link-bars pivoted to each jaw, and of guide-lugs projecting from the adjoining edges of thesejaws, the inner surfaces of these lugs resting against each other, substantially as herein shown and described, and for the purpose set forth.

4. In a punching and shearing machine, the combination, with a jaw pivoted in the frame oi the machine. of a jaw connected with this pivoted jaw by link-bars pivoted to each jaw,

and of a right-and-left-hand screw passing through these jaws for operating them, sub- 20 stantiaily as herein shown and described, and for the purpose set forth.

5. In a punching and shearing machine, the combination, with the jaw B, pivoted on the machine-frame, the jaw A, connected with the z 5 jaw B by link-bars O, pivoted to both jaws of the punch-holder H, pivoted in the upper jaw,

A, and the guide-plates J for this punch-holder, which guide-plates are attached to the machine-frame, substantially as herein shown and 0 described, and for the purpose set forth.

JOHN M. SAILER.

Witnesses:

OSCAR F. GUNZ, U. SEDGWICK. 

